CTI Products MCN RCD System Overview - Manual (Page 23)

MCN System Manual Hardware Installation
CTI Products, Inc.
68-10833-120
19
7.1 Setting the Unit Address
Each MCN module is identified by a unique address that must be set at
installation time. This address is specified by the combination of a Group number
and a Module number. On all modules (except the HIB) the Group and Module
numbers are assigned with the rotary switches on either the front or back of the
module. Whenever the Group or Module number is changed, the module must be
reset or power cycled for the change to occur.
89
7 AB
C
D
EF0
12
3
4
5
6
89
7 AB
C
D
EF0
12
3
4
5
6
89
7 AB
C
D
EF0
12
3
4
5
6
CA-80046-100
MODULE GROUP
Figure 6 - Group and Module Switches
Figure 6 shows a view of the Group and Module switches. Valid ranges of these
switches are:
• Group number = 00 through FE
• Module number = 0 through F
Group number FF is reserved and should not be used for any module in the
system. If Group number FF is assigned to a module, the module, when reset, will
lock on its ERR LED and halt. Other than that restriction, any Group/Module
combination can be used for any module. You do not have to have all modules in
a system set to the same Group number and you do not have to have like modules
set to the same Group number.
Certain MCN modules must have two addresses specified. One is for the MCN
module that it will operate with and the other is for the module itself. The IIB and
TIB modules require this dual address information. Refer to the IIB’s and TIB’s
hardware reference manuals for details about setting the two addresses.
Note that the addresses for HIB modules are entered into the PC when the Remote
Comparator Display software is installed.
CAUTION
All modules in a system must have unique addresses. This address is
made up of the Group and Module switches combined. If two or more
modules are set to the same address, your system will not work properly
and you could have unintended operation.